1630565445 has 16 divisors (see below), whose sum is σ = 2610472320. Its totient is φ = 869112384.

The previous prime is 1630565429. The next prime is 1630565471. The reversal of 1630565445 is 5445650361.

It is not a de Polignac number, because 1630565445 - 2⁴ = 1630565429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6169 + ... + 57438.

It is an arithmetic number, because the mean of its divisors is an integer number (163154520).

Almost surely, 2^1630565445 is an apocalyptic number.

1630565445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630565445 is a deficient number, since it is larger than the sum of its proper divisors (979906875).

1630565445 is a wasteful number, since it uses less digits than its factorization.

1630565445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65324.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 1630565445 is about 40380.2605860834. The cubic root of 1630565445 is about 1177.0079913086.

The spelling of 1630565445 in words is "one billion, six hundred thirty million, five hundred sixty-five thousand, four hundred forty-five".